Asp.net获取系统信息

        [DllImport("kernel32")]
        public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);

        [StructLayout(LayoutKind.Sequential)]
        public struct MEMORY_INFO
        {
            public uint dwLength;
            public uint dwMemoryLoad;
            public uint dwTotalPhys;
            public uint dwAvailPhys;
            public uint dwTotalPageFile;
            public uint dwAvailPageFile;
            public uint dwTotalVirtual;
            public uint dwAvailVirtual;
        }

        protected string MemberName, AdminLevel, MemoryLoad, TotalPhys, AvailPhys, TotalPageFile, AvailPageFile, TotalVirtual;
        protected string ServerOS, CpuSum, CpuType, MachineName, ServerName, ServerPath, ServerNet, ServerArea, ServerTimeOut, ServerStart, UsersTxt;
        protected string PrStart, AspNetN, AspNetCpu, ServerSessions, ServerApp, ServerCache, ServerAppN, ServerFso, RunTime, SessionTime, VersionTxt;
        protected string SiteTitle, SiteUrl;
       
        protected void Page_Load(object sender, EventArgs e)
        {

            this.CheckPower();

            if (this.adminer != null)
            {
                DataLoad();
            }
        }

        private void DataLoad()
        {
            DateTime sTime = DateTime.Now;

            MemberName = "";

            ServerOS = Environment.OSVersion.ToString();
            CpuSum = Environment.GetEnvironmentVariable("NUMBER_OF_PROCESSORS");
            CpuType = Environment.GetEnvironmentVariable("PROCESSOR_IDENTIFIER");
            MachineName = Server.MachineName;
            ServerName = Request.ServerVariables["SERVER_NAME"];
            ServerPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
            ServerNet = ".NET CLR " + Environment.Version.ToString();
            ServerArea = (DateTime.Now - DateTime.UtcNow).TotalHours > 0 ? "+" + (DateTime.Now - DateTime.UtcNow).TotalHours.ToString() : (DateTime.Now - DateTime.UtcNow).TotalHours.ToString();
            ServerTimeOut = Server.ScriptTimeout.ToString();
            ServerStart = ((Double)System.Environment.TickCount / 3600000).ToString("N2");
            PrStart = GetPrStart();
            AspNetN = GetAspNetN();
            AspNetCpu = GetAspNetCpu();
            ServerSessions = Session.Contents.Count.ToString();
            ServerApp = Application.Contents.Count.ToString();
            ServerCache = Cache.Count.ToString();
            ServerAppN = GetServerAppN();
            ServerFso = Check("Scripting.FileSystemObject");
            ServerTimeOut = Server.ScriptTimeout.ToString() + "毫秒";

            SessionTime = HttpContext.Current.Session.Timeout.ToString();

            MEMORY_INFO MemInfo;
            MemInfo = new MEMORY_INFO();
            GlobalMemoryStatus(ref MemInfo);
            MemoryLoad = MemInfo.dwMemoryLoad + " %";
            TotalPhys = dFileSize(MemInfo.dwTotalPhys);
            AvailPhys = dFileSize(MemInfo.dwAvailPhys);
            TotalPageFile = dFileSize(MemInfo.dwTotalPageFile);
            AvailPageFile = dFileSize(MemInfo.dwAvailPageFile);
            TotalVirtual = dFileSize(MemInfo.dwTotalVirtual);

        }